CVE-2026-54411
Medium
Description
Linux-PAM through 1.7.2 contains an observable timing discrepancy (CWE-208) in the pam_userdb module's plaintext-password comparison path in modules/pam_userdb/pam_userdb.c that allows a local or network-adjacent attacker able to repeatedly drive authentication through a calling service to recover the plaintext password of a target account by measuring response-timing differences.
SeverityMedium
CVSS5.9
Exploit probability—
ProductLinux-PAM
PublishedJun 14, 2026
First seenJun 14, 2026
Weakness typeCWE-208CWE-208
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux-PAM Linux-PAM | v ≤ 1.7.2 | — |
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